Yes, a girl can call a guy "meri jaan".
"Meri jaan" is a Hindi phrase meaning "my life" or "my darling". It is a term of endearment used to express deep affection and love for someone.
It's important to note that the use of "meri jaan" can vary depending on cultural context and the relationship between the individuals involved. While it is a common term of endearment between romantic partners, it can also be used between close friends or family members.
The context and tone of the interaction will help determine the intended meaning.
